Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	8608	1247	14%	0.00	1635	804	49%	6.8
10 Kinds of People	19879	4055	20%	0.01	3358	2430	72%	4.2
2048	8453	3927	46%	0.00	3738	3206	86%	2.1
3D Printed Statues	10183	4669	46%	0.00	4287	3837	90%	2.0
3D Printer	749	137	18%	0.00	303	105	35%	8.6
3-Sided Dice	2386	202	8%	0.00	390	141	36%	8.6
4 thought	8621	2899	34%	0.00	2860	2383	83%	2.8
A1 Paper	5366	1560	29%	0.00	1554	1229	79%	3.9
Aaah!	28827	13373	46%	0.00	11935	11127	93%	1.5
Abandoned Animal	2015	440	22%	0.03	505	367	73%	5.1
ABC	13799	6244	45%	0.00	5895	5363	91%	1.9
Ab Initio	1132	214	19%	0.09	171	106	62%	7.5
Above Average	9038	3691	41%	0.00	3643	3265	90%	2.0
A+B Problem	8064	805	10%	0.03	1136	378	33%	8.2
A Brief Gerrymander	220	46	21%	0.15	55	31	56%	9.0
Abstract Art	377	118	31%	0.00	99	76	77%	5.5
Abstract Painting	379	149	39%	0.00	143	110	77%	4.9
Absurdistan Roads II	604	212	35%	0.00	207	141	68%	6.8
Absurdistan Roads III	1542	445	29%	0.02	414	316	76%	5.5
Access Points	418	145	35%	0.01	138	107	78%	5.6
A Classy Problem	9835	2460	25%	0.01	2174	1667	77%	4.4
ACM Contest Scoring	6921	4293	62%	0.00	3801	3587	94%	1.5
Add 'Em Up!	886	252	28%	0.01	252	195	77%	4.1
Adding Words	10847	2564	24%	0.00	2470	1902	77%	4.1
A Different List Game	6879	486	7%	0.00	864	175	20%	9.2
A Different Problem	31018	11396	37%	0.00	10533	9124	87%	2.7
Adjoin the Networks	2116	560	26%	0.00	468	375	80%	5.3
Administrative Difficulties	1255	273	22%	0.03	290	199	69%	6.2
Advanced Causal Measurements	114	36	32%	0.10	33	27	82%	5.9
Adventure Begins	265	86	32%	0.06	90	69	77%	4.4
Adventures in Moving -- Part IV	1369	312	23%	0.00	272	226	83%	4.6
A Favourable Ending	1664	432	26%	0.00	396	306	77%	4.5
A Feast For Cats	2275	812	36%	0.00	557	470	84%	4.0
A Flea on a Chessboard	446	97	22%	0.01	106	77	73%	5.8
AI Jeopardy	214	39	18%	0.02	35	28	80%	6.6
Air Conditioned Minions	5152	1419	28%	0.00	1490	1126	76%	4.0
Airline Hub	1821	338	19%	0.01	371	212	57%	6.6
Airport Coffee	875	188	21%	0.09	176	125	71%	7.0
Airport Construction	3484	451	13%	0.02	374	201	54%	7.5
Airport Logistics	67	15	22%	0.00	22	15	68%	7.3
Airports	486	150	31%	0.11	130	94	72%	6.4
Akcija	7521	3353	45%	0.00	3037	2704	89%	2.0
Aladin	761	78	10%	0.10	125	30	24%	8.3
Alchemy	136	24	18%	0.02	36	21	58%	7.5
Alea iacta est	41	15	37%	0.19	18	14	78%	6.5
Alehouse	304	108	36%	0.03	91	66	73%	6.0
Alex and Barb	183	54	30%	0.00	75	50	67%	6.3
Alice in the Digital World	4739	1100	23%	0.01	997	771	77%	4.3
Alien Codebreaking	242	14	6%	3.23	42	11	26%	9.2
Alien Numbers	2317	1187	51%	0.00	1166	1056	91%	2.1
A List Game	8331	2453	29%	0.00	2334	1960	84%	3.0
All about that base	2885	1141	40%	0.00	1110	934	84%	2.9
All Different Directions	1348	558	41%	0.00	520	457	88%	2.6
Allergy Test	532	139	26%	0.00	162	85	52%	7.3
All Friends	876	164	19%	0.00	157	79	50%	8.9
All is Well	85	25	29%	0.03	23	21	91%	4.9
All Just A Dream	1982	448	23%	0.05	319	225	71%	6.3
All Kill	21	16	76%	0.00	15	14	93%	4.6
Alloys	255	88	35%	0.00	89	77	87%	4.7
All Pairs Shortest Path	9038	1610	18%	0.00	1110	784	71%	5.7
Almost Perfect	7943	1849	23%	0.00	1959	1545	79%	3.3
Almost Union-Find	6788	1202	18%	0.02	1102	629	57%	7.2
Alphabet	1583	789	50%	0.00	808	681	84%	3.2
Alphabet Animals	1956	613	31%	0.00	607	488	80%	3.4
Alphabet Spam	8124	5017	62%	0.00	4128	3964	96%	1.4
Alternative Bracket Notation	209	89	43%	0.00	95	79	83%	5.1
Altruistic Amphibians	402	109	27%	0.22	100	73	73%	5.0
Amalgamated Artichokes	4097	1828	45%	0.01	1616	1413	87%	2.7
Amanda Lounges	1460	426	29%	0.03	388	310	80%	5.4
A Mazing!	2674	604	23%	0.09	288	218	76%	5.2
Amazing Adventures	371	99	27%	0.02	111	79	71%	6.0
Amazing Race	332	88	27%	0.29	92	65	71%	7.5
Ambiguous Result	265	57	22%	0.02	88	54	61%	8.1
Amsterdam Distance	1532	681	44%	0.00	705	583	83%	2.9
A Multiplication Game	753	258	34%	0.00	289	217	75%	4.7
Anagram Counting	3651	1400	38%	0.00	1359	1130	83%	3.2
Andrew the Ant	343	91	27%	0.06	102	79	77%	3.8
A New Adventure	974	149	15%	0.00	163	109	67%	6.1
A New Alphabet	10962	4905	45%	0.00	4542	4198	92%	1.7
An I for an Eye	741	180	24%	0.00	208	145	70%	5.0
Animal Classification	1566	355	23%	0.03	308	203	66%	6.8
An Industrial Spy	1663	881	53%	0.02	665	572	86%	3.2
Another Brick in the Wall	3304	1640	50%	0.00	1576	1441	91%	1.9
Another Candies	8066	2208	27%	0.00	2254	1867	83%	2.7
Another Coin Weighing Puzzle	319	106	33%	0.01	92	79	86%	4.4
Another Dice Game	108	69	64%	0.00	67	58	87%	4.7
Another Query on Array Problem	1603	216	13%	0.05	334	151	45%	7.6
Antenna Placement	139	64	46%	0.00	44	36	82%	5.2
Anthony and Cora	925	247	27%	0.00	284	204	72%	5.2
Anthony and Diablo	3198	1104	35%	0.00	1110	961	87%	2.4
Antiarithmetic?	1535	279	18%	0.01	345	199	58%	7.2
Ants	3691	1637	44%	0.00	1322	1155	87%	2.5
Apaxiaaaaaaaaaaaans!	13217	8064	61%	0.00	7144	6838	96%	1.4
Apostrophe Catastrophe	112	26	23%	0.00	29	19	66%	6.8
Appalling Architecture	679	202	30%	0.00	172	144	84%	4.0
Apparatus	701	173	25%	0.01	143	105	73%	5.9
Apple Market	474	99	21%	0.07	121	62	51%	8.2
Apples, Cherries, and Mangos	417	126	30%	0.02	133	93	70%	6.8
A Prize No One Can Win	2845	1105	39%	0.00	930	818	88%	2.5
Aquarium Tank	513	148	29%	0.00	141	112	79%	4.9